Study on Radioactivity Visibility of Rossing Uranium Mine in Namibia
The ore grade of the Rossing Uranium Mine in Namibia is low and the processing capacity is large.The mined ore is mixed with some waste rocks,and the grinding and leaching costs are high.To solve this problem,the distribution patterns of ore particle size and uranium grade were studied,the radioactivity visibility of representative ore samples was calculated,the radioactive selectivity curve was drawn,and the theoretical sorting index based on the cut-off grade was determined.The theoretical sorting indicators are:when the cut-off grade is 0.01％,the raw ore uranium grade is 0.032％,the concentrate uranium grade is 0.047％,the tailings yield is 33.95％,the tailings uranium grade is 0.002 8％,and the total recovery rate is 96.37％.The results show that radioactive benefici-ation has a certain effect and the ore selectivity is high.It is mainly suitable for tailing of coarse-grained and extremely low-grade ores.The radioactivity visibility can be used as the theoretical basis for radioactive beneficiation of Rossing Uranium Mine.
万方数据
维普
